CaltechAUTHORS
  A Caltech Library Service

Accelerated Electron Transfer Between Metal Complexes Mediated by DNA

Purugganan, Michael D. and Kumar, Challa V. and Turro, Nicholas J. and Barton, Jacqueline K. (1988) Accelerated Electron Transfer Between Metal Complexes Mediated by DNA. Science, 241 (4873). pp. 1645-1649. ISSN 0036-8075. http://resolver.caltech.edu/CaltechAUTHORS:20160513-104502311

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20160513-104502311

Abstract

DNA-mediated long-range electron transfer from photoexcited 1,10-phenanthroline complexes of ruthenium, Ru(phen)^(2+)_3, to isostructural complexes of cobalt(III), rhodium(III), and chromium(III) bound along the helical strand. The efficiency of transfer depended upon binding mode and driving force. For a given donor-acceptor pair, surface-bound complexes showed greater rate enhancements than those that were intercalatively bound. Even in rigid glycerol at 253 K, the rates for donor-acceptor pairs bound to DNA remained enhanced. For the series of acceptors, the greatest enhancement in electron-transfer rate was found with chromium, the acceptor of intermediate driving force. The DNA polymer appears to provide an efficient intervening medium to couple donor and acceptor metal complexes for electron transfer.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.3420416DOIArticle
http://science.sciencemag.org/content/241/4873/1645PublisherArticle
ORCID:
AuthorORCID
Barton, Jacqueline K.0000-0001-9883-1600
Additional Information:© 1988 American Association for the Advancement of Science. 14 April 1988; accepted 26 July 1988. 14 April 1988; accepted 26 July 1988. We thank B. Beme for stimulating discussions regarding the near-neighbor distance distributions. Supported by National Science Foundation and the Army Office of Research.
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
Army Research Office (ARO)UNSPECIFIED
Record Number:CaltechAUTHORS:20160513-104502311
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160513-104502311
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67073
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:13 May 2016 18:39
Last Modified:13 May 2016 18:39

Repository Staff Only: item control page